A novel bio-inorganic bone implant containing deglued bone, chitosan and gelatin

Saraswathy, G.; Pal, Subrata; Rose, C.; Sastry, T. P.

doi:10.1007/bf02708641

Cited by 77 publications

(47 citation statements)

References 11 publications

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“…2), being related to local symmetry changes [16][17][18]. All the differences in this range are related to the change of the amorphous material into a crystalline phase as indicated by XRD data.…”

Section: Ftir Characterizationmentioning

confidence: 98%

Physico-chemical properties of Chitosan films

et al. 2004

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Chitosan films obtained by dry phase inversion were prepared from an aqueous solution of chitosan in acetic acid. The films, of thickness less than 20 µm, were transparent, very flexible and had smooth surfaces. Increasing the film thickness induces an increase of the internal tensions and the consequent formation of a rough surface. Structural investigations by X-ray diffraction and Fourier transform IR analysis, showed that the chitosan films, as prepared, are amorphous. Further annealing to evaporate acetic acid and water traces, changed the amorphous phase into a more ordered phase, characterized by diffraction peaks at 2θ values of 9, 17, 20 and 23 degrees. Thermal investigations by TG, DTG, and DTA revealed that the decomposition of the chitosan films as prepared proceeds in two stages, starting from 180 • C and 540 • C.

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Section: Ftir Characterizationmentioning

confidence: 98%

Physico-chemical properties of Chitosan films

et al. 2004

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“…It has been reported that the FTIR spectra of PAm where peaks at about 3298, 3184 and 1660 cm -1 showed the presence of primary amide (-NH stretching vibration) group and peaks near about 1595 and 1429 cm -1 corresponding to C=O asymmetric stretching vibration [26]. Gelatin being a protein, has been reported to contain the characteristic amide absorption bands at about 1690 and 1530 cm -1 [27]. The FTIR spectra of PAm-gelatin-HA composite is shown in Figure 1b, which contains all the characteristic absorption peaks of HA, PAm and gelatin.…”

Section: Ftir-studiesmentioning

confidence: 99%

Designing of hydroxyapatite-gelatin based porous matrix as bone substitute: Correlation with biocompatibility aspects

Bundela¹,

Bajpai²

2008

Express Polym. Lett.

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In the present study polyacrylamide (PAm)-gelatin-hydroxyapatite (HA) composites have been synthesized by suspension polymerization method. The prepared composites were characterized by Fourier transform spectroscopy (FTIR) which revealed the presence of functional groups in the composite. The X-ray diffraction (XRD) studies indicated that HA powder was present in nano size. Thermogravimetric analysis (TGA) revealed that composite is more thermally stable than the polymer matrix alone. The morphology of composite studied by optical microscopy (OPM) and scanning electron microscopy (SEM) suggested that pore size was between 3–20 µm. The composites showed adequately good mechanical properties as evident from the varying compressive strength and modulus in the range 31.57±8.16 MPa and 745±388 MPa, respectively. The water sorption behavior was found to be dependent on the chemical composition of the matrix and the sorption data were used to calculate network parameters. The porosity of composite varied between 4 to 30.66%.The in vitro blood compatibility indicated that the adsorption of bovine serum albumin (BSA) varied from 0.11 to 0.24 mg•g–1, the percentage haemolysis was between 2.4 to 6.9% and the weight of blood clot formed on the composite surfaces were found in the range 11 to 52 mg

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“…Our results are agree with that obtained by numerous researches. Saraswathy et al (2001) confirmed that the peak at 1384 cm -1 represents the -C-O stretching of primary alcoholic group (-CH2 -OH). De Velde and Kikens, 2004, discussed that absorbance bands of 2878, 1420 cm -1 indicated C-H stretching, C-H deformations, respectively.…”

Section: Discussionmentioning

confidence: 57%

“…De Velde and Kikens, 2004, discussed that absorbance bands of 2878, 1420 cm -1 indicated C-H stretching, C-H deformations, respectively. Saraswathy et al (2001) observed the major absorption band between 1020 and 1220 cm -1 which represents the free amino group (-NH2) at C2 position of glucosamine, a major group present in chitosan. Palpandi et al (2009) also noted that the band at 1320 cm -1 characteristics of (acetyl group0 C=O, and also evaluated two possibilities, either the large band centered at 3300 cm -1 (very near to that at 3450 cm -1 ) chosen for polymers.…”

Section: Discussionmentioning

confidence: 99%

Role of Chitosan Extracted from Shrimp Waste in Controlling Tomato Blackmold Disease Caused by Alternaria alternata

Zian

2016

Journal of Applied Plant Protection

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Tomato suffers from several diseases at all stages of its life. Blackmold, caused by Alternaria alternate (Fr.) Keissler is one of the most important postharvest disease of tomato. The effect of various concentrations of chitosan solution on A. alternata the causal agent of blackmold disease of tomato fruits on mycelial growth was studied. The isolate was tested in vitro using PDA amended with seven concentrations of chitosan (0, 1, 2, 3, 4, 5 and 6 mg ml -). Chitosan significantly (P < 0.05) inhibited the radial mycelial growth of this fungus by 67.4% at 6 mg ml 1 concentration. Tomato fruits treated with aqueous solution of chitosan compared with the Ipromise ® fungicide (Thiophonate-methyl 20% + Iprodione 20%) was artificially inoculated with A. alternata and incubated at 8, 18 and 28°C. Lesion diameters and total phenolic contents were recorded 7 and 14-days after inoculation. Chitosan also, significantly (P < 0.05) reduced the lesion diameters of tomato fruits which were smaller for all treatments when stored at 8°C compared to the control treatment. Chitosan treatment resulted in the highest increase in total phenolic contents over the untreated control. Whereas a less increase in total phenolic contents was recognized in fungicide treatment. In all treatments, total phenolic contents increased first and declined at the end of storage. The results of this study indicate that chitosan was a alternative safe coating method especially when stored at low temperature degree for prevents tomato fruits blackmold disease which causes economic losses during transportation, marketing and storage.

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A novel bio-inorganic bone implant containing deglued bone, chitosan and gelatin

Cited by 77 publications

References 11 publications

Physico-chemical properties of Chitosan films

Physico-chemical properties of Chitosan films

Designing of hydroxyapatite-gelatin based porous matrix as bone substitute: Correlation with biocompatibility aspects

Role of Chitosan Extracted from Shrimp Waste in Controlling Tomato Blackmold Disease Caused by Alternaria alternata

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